about two hundred, and the number required
to complete it reckoned at about twenty more.
Further, since the moon in every two minutes
of time completes a (circular) minute of her
circuit relatively to the sun, and since at the
commencement of every Sothiac cycle she
commences a new lunation and comes (in-
visibly) to the meridian at the same time with
the sun at noon, it follows that these unit-
intervals of observation correspond with the
minute-intervals of her motion; and each
course of the Grand Pyramid corresponds to
the change in the altitude of the sun for one
circular minute of the moon's motion relatively
to that body.

The true and apparent forms of the Grand
Pyramid being thus determined by the true
and apparent motions of light, we have now
to inquire with what scale we are to build up
the chambers of the house. The rolling earth
once more suo-oests the standard. The cosmic
unit of space—the Sceptre of Anup, the Guide